Heddle-disconnecting means fob plush loom s



HEDDLE DISCONNEGTING MEANS FOR LUSH LOO'vS Filed July l0V 195i@ Il Saeets-S'hee 2 0mo 6, i925. 1,555,862

L.. J. LUDWG HEDDLE DISCONNECTING MEANS FOR PLUSH LOOMS Filed July 1Q. 1924 4 Sheets-Sheet 3 L. .5. LUD'W'G HEDDLE DISCONNECTING MEANS FOR PLUSH LOGMS 4 Sheets-Sheet 4 Filed July' l0. 1324 Patented @Ich 6, 1925.

UNITED STATES LOUIS J'. LUDIGr,y OF PHILADELPHIA, PENNSYLVANIA.

HEDDLE-DISCONNECTING MEA-NS FOR PLUSH LOOMS.

Application filed July 10, 1924. Seriali No. 725,141.

To all whom it may concer/uv.'

Be it known that I, Louis J. LUDWIG, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in l-leddle-Disconnecting Means for Plush Looms, of which the following is a specification.

My invention relates to plush looms and more particularly to the means for operatively disconnecting the heddles.

Plush fabric consists of a backing having an interwoven and evenly cut pile or nap. The fabric coming from the loom consists of a pair of backings connected by interwoven uncut pile or nap threads. This double fab ric is passed through a splitting Amachine which cuts the pile threads midway between the backings. The ends of the double fabric are woven partway, without the pile threads, between the backings. These ends, known as. headings, are for interlocking the pile threads between the woven threads of the headings to make a finished end and for at taching the double fabric to spike rolls in the splitting machine so that when the double fabric is split, one piece of plush will berolled up on one roll and the other piece on anotherl roll. Before weaving the headings, the pile weaving mechanism must be disconnected.

The usual practice is to disconnect the pile heddles from their straps, when the heddles are midway of their path of travel, and to tie or otherwise support them on the. frame in this position.

The objection to this method is that it requires considerable time; that it requires an experienced person to properly disconnect and connect the heddles; that the weaver loses time in waiting for the proper person to make the disconnection, and that the weaving mechanism is idle meantime.

The objects of my invention are to provide means on the pile heddle moving means whereby a quick operative connection and disconnection of the heddles may be made by an inexperienced person and to so mount the heddle-moving means that access thereto may be readily had.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which- Briefly the invention consists in looselyv mounting. the cams for operating the pile heddles ony the drive shaft providing manually operated means for connecting vand disconnecting the shaft and the cams; dis.- posing all of the heddle operating cams outside the loomv frame, and'connecting the cams with the tops of the heddles.

Referring to* the drawings, 1y indicates theV loom frame provided with top pulleys 2 andv bottom pulleys 3. Heddles e are supported by the pulleys and operated by heddle moving mechanism 5 connectedv with the tops of the heddles. The first pair of. heddles from the right' is for shifting the pile threads and is indicated by P. The second pair is for shifting the'to'p backing threadsand is indicatedI by B. The third pair is for shifting the bottom backing threads and is indicated by B. The mechanism which shifts these heddles consists of a driving shaft 6 mounted in' the frame;y four backing cams 7 fixed' to.y

theshaft four backing-.levers 8 pivoted. at 9 andprovided with rollers 10 adapted to. en-v gage backingl cams 7; a pair of pile cams 11 loosely mounted on shaft 6, and a pair. of pile levers 12, also pivoted at 9, provided with rollers 13 adapted to engage pile cams- 11. Each free endli of leversl 8 and 12 is connected to one of theheddles by a rod 15, a chain 16 passing over a pulley 2, a pair of wire rods 17, a pair of straps 18 passing over the other pulleys 2 and a pair of hooks 19 secured to the heddles adjacent their ends. The connections between the parts 15, 16,17, 18 and 19 may be made in any suitable manner. The pairs of heddles-P, B and B are connected at-their bottoms, adjacent the ends, by a pair of hooks 20,v a pair of straps 21 passing around the bottom pulleys 8 and' hooksi22 secured to the adjacent heddle. v

A manually operated lever 23 pivotedy at 24 is connected for operating clutching means 25 which are adapted to connect the loosely mounted pile cams ll with shaft 6. Clutching means 25 is ot such character that the loosely mounted cams l1 will be connected to driving shaft 6 in the saine relative position at all times, thereby insuring proper timing ot the pile heddles relatively to the otherl parts ot the loom and making the heddle disconnecting means tool-prooi. I have shown clutching means 25 as consisting of a single dog clutch member 26 iixed to cams l1 and a single dog clutch member 27 slidably keyed on shaft 6 and provided with an annular groove 28 for receiving a block 29-pivoted at opposite sides ot lever 23. Lever 23 is held in clutching and nonclutching position by a locking arm 30, pivote-d to the lever and having a notch adapted to hook over a pin 83 on the loom frame to hold lever in clutching position, and a notch 34: adapted to engage pin 33 to hold the lever in non-clutching position. rlhese notches insure that the clutching means 25 will always be either in clutching or non-clutching position.

During the weaving or' the double backing plush the shifting ot the top backing heddles B takes place above the shitting movement ot the bottom backing heddles B and the shifting movement of the pile heddles l) is from the uppermost position ot the top backing heddles B to the lowermost position of the bottom backing heddles B.

When it is desired to weave a heading in the cloth, pile heddles P are brought to the center of their path of movement as shown in Figure 3. It the pile heddles are now disconnected from the heddle operating mechanism and the backing heddles are allowed to operate in the usual manner, the cloth produced will consist oi' a top backing and bottom backing with the pile threads floating between the backings instead of being interwoven. The pile heddles are therefore disconnected trom the heddle operating mechanism 5 by manipulating` holding arm 30 and lever 23 to disconnect clutching member 27 from member 26, and bring notch 34 on 4pin 83 to hold the lever in this nonclutching position. rlfhe loom is then operated in the usual manner and the top and bottom backings are woven with the pile threads floating between the backings. During the weaving action, cams l1 and the parts between the cams and the pile heddles will remain idle, while cams 7 and the mechanism between the cams and the backing heddles will operate in the usual manner.

`With the mechanism above described, the pile weaving mechanism may be instantaneously connected or disconnected by merely actuating a lever.

While l have described my invention as taking a particular form, it will be understood that the various parts may be changed without departing from the spirit thereoi', and hence l do not limit myself to the precise construction set iorth, but consider that l am at liberty to make such changes and alterations as iairly come within the scope of the appended claims.

Having thus described my invention, what lf claim as new and desire to secure by Letters Patent is l. in loom having pile heddles and backing heddles, a driving shaft, pile cams loosely mounted on said shaft and operatively connected with the pile heddles, other cams iztedly mounted on said shaft and operatively connected with the backing heddles, a clutching` member on the pile cams, another clutching member slidably mounted on the shaft to rotate therewith, and a hand operated lever engaging said slidable clutching member for moving it at will into and out of clutchingengagement with the member on the cams.

2. ln a loom having pile heddles and backing heddles, a driving shaft, pile cams loosely mounted on said shaft and operatively connected with the pile heddles, other cams iixedly mounted on said shaft and operatiiely connected with the backing heddles, a clutching member on the cams, another clutching member slidably mounted on the shaft to rotate therewith, a hand operated lever engaging said slidable clutching member for readily moving it at will into and out 01"' clutching engagement with the clutching member on the cams, and a latch ior holding the lever in clutching and in non-clutching position.

3. In a loom having a frame provided with top and bottom pulleys, pile heddles and backing heddles and a shaft for operating the heddles mounted in the frame, pile cams loosely mounted on said shaft and operatively connected with the pile heddles, other cams I'ixedly mounted on the shaft and operatively connected with the backing heddles, a lever pivoted at one end and having means at its intermediate end for engaging each cam, flexible means connected with the free end ot' eachlever, passing over the top pulleys of the frame and connected with the top of each heddle adjacent its ends, flexible means connected to the bottom oit each heddle adjacent its ends, to pass around the bottom pulleys and connected to the bottom ot the adjacentA heddle near its ends, a clutching member on the pile cams, another clutching member slidable on the shaft to rotate therewith, and a hand operating lever to engage said slidable. clutching member to move it into and out of clutching engagement with the member on the cam.

ln testimony whereot` ll have signed my name to this speciication.

Louis J. Luni/vie. .i

lli; 

